dirt-track

n track made of cinders, etc (eg for motor-cycle races) 用煤渣等铺的跑道（如用於摩托车比赛的）.

directed, direction, direction-finder, directional, directive, directly, directness, director, director-general, directorate, directorship, directory, dirge, dirigible, dirk, dirndl, dirt, dirt cheap, dirt farmer, dirt road, dirtily, dirty, dis-, disability, disable, disabled, disablement, disabuse, disadvantage, disadvantaged, disadvantageous, disadvantageously, disaffect, disaffected, disaffection, disafforest, disaggregate, disagree, disagree with, disagreeable,